Water-heater.



No. 824,709. PATENTED JULY 3, 1906. J DEMAREST WATER HEATER. APPIIIOATION FILED AUG. 19, 1905.

JOHN DEMAREST, OF BINGHAMTON, NEW YORK.

WATER-HEATER.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed August 19, 1905. Serial No. 27%919- T0 aZZ' whom it may concern:

Be it known that 1, JOHN DEMAREST, a citizen of the United States, residing at Binghamton, in the county of Broome and State of New York, have invented an Improvement in Water-Heaters, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention relates to waterheaters, and more particularly to domestic water-heaters which are intended for use with kitchenranges in dwellings without plumbing and where the ordinary water-pressure is absent. In the absence of such pressure supply the ordinary domestic boiler with its water circulation from the boiler to a water front or coil in the fire-box of the range and back again to the boiler cannot of course be employed. In substitution therefor there is sometimes used a special water-reservoir located in a reservoir-chamber formed within the range itself and through which chamber the products of combustion are allowed to pass on their way from the fire-box to the chimney and there to heat the water-reservoir and its contained water. .The water as needed is dipped out of the reservoir, the hinged top of which is usually flushwith the top of the range, which latter of course for the purpose of holding the reservoir is of a specially-constructed type. This method of water-heating is objectionable not only because unavoidable entrance of water into the reservoir-chamber causes the range-castings to rust, but it has been found impossible successfully to use the range for baking and at the same time to pass the products of combustion through the reservoir-chamber to heat the water. A special damper is therefore usually provided to cut off that chamber when a baking heat in the oven is required. Another substitute for the domes tic boiler consists of a simple hot-water reservoir connected to the usual water front or coil of the range just as the ordinary boiler is connected. This does not interfere with baking; but if the water-level of the reservoir is allowed to fall below the connections to the water-front the latter becomes overheated, with danger of cracking when fresh water is added. On the other hand, if care is exercised to maintain the requisite level in the reservoir the available capacity thereof is quite limited.

My invention provides a water heater which can be connected with the usual water-front or other heating means in the combustion-chamber of the range without interfering with the baking qualities of the range, there being provided, however, means for permitting the continued circulation of water in the water-front no matter how much of the available water-supply of the reservoir is withdrawn.

Of the drawings, Figure 1 is a plan view showing the application to a domestic range of oneform of heater constructed according to my invention, the heater-cover being removed. Fig. 2 is a front elevation of the same, showing the heater partially in section; and Fig. 3 is a longitudinal vertical section of the heater removed from its pedestal and detached from the range, taken on the line 3 3 in Fig. 2.

Referring to the drawings, the range a, which may be of any suitable construction, has provided in its fire-box the usual waterfront b, conventionally indicated in dotted lines; but for the latter of course may be substituted a water-coil or any other suitable means for heating the water required for the heater. At one side of the range, or wherever the greatest conveniencerequires, is placed the heater 0, which may be of any suitable size, shape, or construction, but which herein is in the form of an upright cylinder mounted upon the pedestal d and having its top projecting through and somewhat above the shelf or bracket 6, which latter is attached to the opposite side of the range from the firebox.

The interior of the heater is provided with an upright tapered or frusto-conical partition-wall f, dividing the same into two concentric chambers-namely, the inner cham ber g, intended for the heated water, and the outer chamber it, intended for the heatingwater, which latter circulates to and from the water-front I) through the two connectingpipes i and 7c, entering the chamber h through the back of the heater. The partition-wall f is carried above the mouth of the upper connecting-pipei to separate the two chambers, so that no matter how much water is withdrawn from the interior or heated-water chamber the water-level in the outer or heating-water chamber h will not fall below the top of the partition-wall and will therefore be main.- tained above the connections with the waterfront. WVith the reservoir initially filled above the top of the partition-wallf a jacket of hot water will be maintained in the heating water chamber so long as there is a fire in the range, and this will heat the water in the adjacent inner ch amber g. The reservoir shown is provided with a hinged top Z, and when this is turned back the heated water may be dipped out from the top of the reservoir, or the same may be withdrawn from the bottom of the heated-water chamber through the discharge-faucet m. (Shown in Fig. 3.)

The heater may be constructed as a part separate from the range, as is the ordinary domestic boiler, and is therefore adapted for attachment to any standard type of range. It may be supported upon a pedestal, as shown, or upon a part of the range or in any other suitable way. The illustrated arrangement, however, where the top of the heater projects somewhat above the top face of the range, continued as it is by the extensionshelf (2, is convenient, since the water may be readily dipped from the elevated top of the heater into a vessel placed by the side of the same and upon the extension-shelf.

The partition wall f being tapered, as stated, causes the heated-water chamber to increase in diameter and capacity toward the bottom. The capacity of the heating-water chamber at the point needednamely, about the water-front connectionsis thus rendered ample, and at the same time a acket of heating water is maintained about the heated water chamber from top to bottom. While this is the preferred construction, it is not absolutely necessary that said jacket should eX tend entirely to the bottom of the heatedwater chamber; but I prefer to have it do so, since this insures the heating of the water in the inner chamber even when the water is partially withdrawn.

The partition-wall f might be extended to the top of the reservoir, if desired; but it is unnecessary entirely to separate the two chambers above the water-front connection, and I prefer to terminate the partition short of the top, as shown, because the act of filling the reservoir will thereby necessarily replenish the water of the outer chamber as well as the inner chamber. When the wall is terminated short of the top, the water may also be more readily removed. The heating-water chamber h may be drained when desired by means of the drain-cock n.

Obviously the shape of the reservoir is an immaterial matter, and its size or capacity may be made anything within the capacity of the water-front of the range.

It will be seen that by the use of this heater all the water may be withdrawn from the heated-water chamber without danger of stopping the circulation in the water-front, while the space which is required for maintaining the outer or heating-water chamber is not suflicient materially to reduce the capacity of the heater, and particularly is this the case where the heated-water chamber has an increasing capacity toward the bottom.

While I have shown and described one form of my invention, it is to be understood that the sameis not limited to the details or form and arrangement of parts disclosed, but that extensive modifications may be made in the same without departing from the spirit of my invention.

I claim- 1. A domestic water-heater comprising an outer chamber provided with means for connecting it to the water-front of a range to secure the circulation of heated water therein, a truncated-cone-shaped inner chamber with.- in said outer chamber, reaching from the bottom thereof to a point below the top and be ing open at the top, and means to permit the withdrawal of water from the inner chamber so inclosed.

2. The combination with a range and its water front or coil, of a water-heater connected thereto and comprising an outer chamber, pipes connecting said chamber to the water front or coil so as to secure the circulation of hot water in said chamber, an open heatedwater chamber within said first-mentioned chamber and means to permit the Withdrawal of water from said inner chamber.

3. The combination with a range provided with an apertured extension-shelf, and its wa ter front or coil, of a water-heater secured within the aperture of the said shelf and comprising an outer heating-water chamber connected to the water front or coil and an inner heated-water chamber, the latter being of less height than the heating-water chamber and open at the top and means to permit the withdrawal of water from said heated-water chamber.

In testimony whereof I have signed my name to this specification in the presence of two subscribing wltnesses.

JOHN DEMAREST.

Witnesses:

FRED W. MoMAHoN, M. A. BURDIOK. 

